Combining dimensional models of internalizing symptoms and repetitive negative thought: Systematic replication, model...

Area of Science:

• Psychopathology
• Dimensional Models
• Internalizing Symptoms

Background:

• Transdiagnostic dimensional models offer promise for understanding psychopathology.
• Few studies have explored combining distinct models to capture the full spectrum of psychopathology.

Purpose of the Study:

• To integrate two prominent models of internalizing psychopathology: a four-factor model of internalizing symptoms and a three-factor model of repetitive negative thought.
• To determine if these models capture distinct or overlapping constructs.

Main Methods:

• Employed model comparison techniques to integrate the two models.
• Utilized statistical analysis to identify common and specific factors within the integrated model.

Main Results:

• The integrated model includes a general factor for common internalizing, plus specific factors for low positive affect, anxious arousal, anxious apprehension, and rumination.
• Little evidence supported a separate general repetitive negative thought factor, suggesting construct isomorphism.
• All factors demonstrated associations with diagnostic status across three psychiatric disorders, indicating external validity.

Conclusions:

• The integration of internalizing symptom and repetitive negative thought models results in a unified dimensional structure.
• The findings support the clinical utility of this integrated model for understanding and potentially diagnosing psychopathology.